<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>6 模板语法-属性</title>
    <script src="js/vue.global.js"></script>
    <style>
        .class1{
            background: #444;
            color: #eee;
        }
    </style>
</head>
<body>
<div id="app">
    <label for="r1">修改颜色</label><input type="checkbox" v-model="use" id="r1">
    <br><br>
    <div v-bind:class="{'class1': use}">
        v-bind:class 指令
    </div>
</div>

<script>
    const app = {
        data() {
            return {
                use: false
            }
        }
    }

    Vue.createApp(app).mount('#app')
</script>
</body>
</html>